液壓支架畢業(yè)論文

摘要
本課題主要論述了液壓支架的主要設(shè)計(jì)過程。其中包括：液壓支架的選型、總體設(shè)計(jì)、主要零部件的設(shè)計(jì)以及液壓系統(tǒng)設(shè)計(jì)。
支架的形式為掩護(hù)式支架。支架除了要有效的對頂板進(jìn)行有效支撐，還要實(shí)現(xiàn)升、降、推移幾個(gè)步驟。支架采用四連桿機(jī)構(gòu)，改善支架的受力狀況，縮小支架的升降過程中頂梁前端前后移動(dòng)的距離。立柱采用單伸縮液壓缸，前端帶有加長桿，以滿足支架最低及最高位置時(shí)的高度要求。頂梁掩護(hù)梁、底座都做成箱體結(jié)構(gòu)用鋼板焊接而成。
在研制液壓支架時(shí)，需要對支架進(jìn)行生產(chǎn)試驗(yàn)和分析研究，確定合理的液壓支架受力參數(shù)、運(yùn)動(dòng)參數(shù)和結(jié)構(gòu)參數(shù)，以及選定液壓支架最佳方案等方面綜合性的科學(xué)技術(shù)問題。
關(guān)鍵詞：液壓支架；頂梁；底座；立柱；結(jié)構(gòu)設(shè)計(jì)
ABSTRACT
The article mainly elaborate the hydraulic support design for top-caving. including: the selection of hydraulic pressure support form, system design, main spar part design and examination of hydraulic system design.
The support eliminates must realize effectively carries on the strut to the roof, but also must realize ,to fall, to push, move four steps .the support uses four link motion gears, improves the support the stress condition, reduces the support to rise and full the distance which in the process fort end the top-beam around moves. The column uses the list expansion and contraction hydraulic cylinder, front end has legthen the pole, satisfies the support to be lowest and time the highest position high request. The top-beam, shields Liang, the foundation all makes the packed in a box body structure, becomes with the steel plate welding.
At research to presses the support, need to carry on produce to experiment and analyze the research, make sure reasonable of liquid presses the support to be subjected to the dint parameter, the sport parameter and the structure parameters, and make selection the liquid to press the synthetic science technique problem of aspect of etc. of the best project of support.
Keyword: Hydraulic pressure support；Top beam；Cradle；the column-type support；structure design
目錄
1緒  論 1
1.1國內(nèi)外液壓支架的研究現(xiàn)狀及發(fā)展 1
1.2本課題的研究目的和意義 3
2液壓支架基本理論分析 5
2.1 液壓支架的工作原理 5
2.1.1 支架升降 5
2.1.2支架推移 6
2.1.3 支架承載過程 6
2.2 液壓支架的類型和結(jié)構(gòu) 8
2.2.1 支撐式支架 8
2.2.2 掩護(hù)式支架 9
2.2.3 支撐掩護(hù)式支架 9
2.2.4 特種液壓支架 10
2.3 對液壓支架的基本要求 10
2.4支架的選型設(shè)計(jì) 11
2.4.1設(shè)計(jì)的原始條件 11
2.4.2支架的支護(hù)性能與外載荷 11
2.4.3 影響架型選擇的因素 12
2.4.4 支架架型的確定 13
3 液壓支架的整體結(jié)構(gòu)設(shè)計(jì) 15
3.1 支架高度、中心距的確定 15
3.1.1支架高度 15
3.1.2支架伸縮比 15
3.1.3支架間距 15
3.2頂梁長度計(jì)算 16
3.2.1支架工作方式對頂梁長度的影響 16
3.2.2頂梁長度計(jì)算 16
4支架主要部件的設(shè)計(jì) 20
4.1支架主要部件的設(shè)計(jì)要求 20
4.2頂梁的設(shè)計(jì) 21
4.3支架技術(shù)參數(shù)和立柱的設(shè)計(jì) 22
4.3.1  支護(hù)面積 22
4.3.2 確定立柱的技術(shù)參數(shù) 23
4.3.3 安全閥壓力與立柱工作阻力的確定 26
4.3.4支護(hù)效率 29
4.4立柱柱窩位置和受力計(jì)算 29
4.4.1立柱布置 30
4.4.2立柱柱窩位置的確定 30
4.5 千斤頂技術(shù)參數(shù)的確定 32
4.5.1平衡千斤頂?shù)墓δ芘c設(shè)計(jì) 32
4.5.2對設(shè)計(jì)的技術(shù)要求 32
4.5.3保持力矩的確定 33
4.5.4平衡千斤頂在頂梁上位置的確定 34
5 支架受力分析與計(jì)算 39
5.1支架工作狀態(tài) 39
5.1.1 頂板狀態(tài) 39
5.1.2支架工作狀態(tài) 39
5.1.3支架受力 40
5.2受力計(jì)算 40
6 液壓系統(tǒng)設(shè)計(jì) 44
6.1液壓支架的液壓系統(tǒng)特點(diǎn) 44
6.2 液壓系統(tǒng)的設(shè)計(jì)方法 45
6.3 千斤頂系統(tǒng) 46
6.3.1 平衡千斤頂系統(tǒng) 46
6.3.2 活動(dòng)側(cè)護(hù)板控制方式 46
6.4乳化液泵站系統(tǒng) 48
6.4.1乳化液泵站 48
6.4.2泵站液壓系統(tǒng) 49
6.4.3乳化液泵站的元部件 52
7技術(shù)經(jīng)濟(jì)分析 55
結(jié)論 56
致謝 57
參 考 文 獻(xiàn) 58